
1. 中国航空工业空气动力研究院,沈阳,110034
2. 高超声速气动力/热技术重点实验室,沈阳,110034
3. 北京航空航天大学 航空科学与工程学院,北京,100191
Published:2023
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冷岩, 张劲柏, 钱战森. 飞机超声速机动飞行条件声爆预测方法[J]. 空气动力学学报, 2023, 41(6): 45−54.
LENG Yan, ZHANG Jinbai, QIAN Zhansen. Superboom prediction for vehicles at supersonic maneuvering flight[J]. 2023, 41(6): 45-54.
冷岩, 张劲柏, 钱战森. 飞机超声速机动飞行条件声爆预测方法[J]. 空气动力学学报, 2023, 41(6): 45−54. DOI: 10.7638/kqdlxxb-2022.0080
LENG Yan, ZHANG Jinbai, QIAN Zhansen. Superboom prediction for vehicles at supersonic maneuvering flight[J]. 2023, 41(6): 45-54. DOI: 10.7638/kqdlxxb-2022.0080.
针对飞机超声速机动飞行条件下的超声爆问题,基于广义Tricomi方程建立了表征焦散线附近压力波强非线性演化过程的空间模型,采用伪时间步推进和算子分裂算法,结合时域和频域方法开发了可求解超声爆问题的计算程序ARI_Superboom。构建的求解方法可分为3个步骤:首先,应用航空工业气动院自主研制的CFD软件ARI_Overset在三维空间求解N-S方程,得到作为声爆远场传播初始值的近场空间压力分布;其次,基于自主研发的ARI_Boom声爆预测程序开展射线追踪和声爆远场传播计算,获得焦散线及指定高度处声爆信号;最后,通过ARI_Superboom预测程序获得焦聚区的地面超声爆信息。通过飞机超声速匀加速状态下地面产生的超声爆预测算例,验证了基于广义Tricomi方程建立的超声爆预测方法的可行性和准确性。
Aimed at the superboom problem of flight vehicles under supersonic maneuvering conditions
a spatial model has been established based on the Lossy Nonlinear Tricomi Equation (LNTE) to characterize the nonlinear evolution process of pressure waves near the caustic. The equation is solved with the pseudo time step and the operator splitting algorithm in the time and frequency domains
and a computation code named ARI_Superboom is developed for the superboom problem. The overall procedure for analyzing the focus boom includes three steps. First
the whole flow field is obtained by solving the three-dimensional N-S equations using the in-house CFD solver ARI_Overset developed by the Aerodynamics Research Institute (ARI) of AVIC
based on which the near-field pressure is extracted. Second
the ray tracing and its propagation to the far field are calculated by another in-house code ARI_boom to obtain the sonic boom signature and caustic at a given height. Finally
the ground superboom information in the focus area is predicted by ARI_Superboom. The focus boom prediction method is used to predict the superboom on the ground generated by a supersonic vehicle under uniform acceleration
and the results verify the feasibility and accuracy of the present LNTE based method.
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